Photonic-Band-Gap Traveling-Wave Gyrotron Amplifier
We report the experimental demonstration of a gyrotron traveling-wave-tube amplifier at 250 GHz that uses a photonic band gap (PBG) interaction circuit. The gyrotron amplifier achieved a peak small signal gain of 38 dB and 45 W output power at 247.7 GHz with an instantaneous −3 dB bandwidth of 0.4...
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2014
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| Online Access: | http://hdl.handle.net/1721.1/85081 https://orcid.org/0000-0003-1589-832X https://orcid.org/0000-0001-9813-0177 |
| _version_ | 1826196862076452864 |
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| author | Nanni, Emilio Alessandro Lewis, Samantha M. Griffin, Robert Guy Shapiro, B. Temkin, Richard J |
| author2 | Massachusetts Institute of Technology. Department of Chemistry |
| author_facet | Massachusetts Institute of Technology. Department of Chemistry Nanni, Emilio Alessandro Lewis, Samantha M. Griffin, Robert Guy Shapiro, B. Temkin, Richard J |
| author_sort | Nanni, Emilio Alessandro |
| collection | MIT |
| description | We report the experimental demonstration of a gyrotron traveling-wave-tube amplifier at 250 GHz that uses a photonic band gap (PBG) interaction circuit. The gyrotron amplifier achieved a peak small signal gain of 38 dB and 45 W output power at 247.7 GHz with an instantaneous −3 dB bandwidth of 0.4 GHz. The amplifier can be tuned for operation from 245–256 GHz. The widest instantaneous −3 dB bandwidth of 4.5 GHz centered at 253.25 GHz was observed with a gain of 24 dB. The PBG circuit provides stability from oscillations by supporting the propagation of transverse electric (TE) modes in a narrow range of frequencies, allowing for the confinement of the operating TE[subscript 03]-like mode while rejecting the excitation of oscillations at nearby frequencies. This experiment achieved the highest frequency of operation for a gyrotron amplifier; at present, there are no other amplifiers in this frequency range that are capable of producing either high gain or high output power. This result represents the highest gain observed above 94 GHz and the highest output power achieved above 140 GHz by any conventional-voltage vacuum electron device based amplifier. |
| first_indexed | 2024-09-23T10:39:09Z |
| format | Article |
| id | mit-1721.1/85081 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:39:09Z |
| publishDate | 2014 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/850812022-09-30T22:01:47Z Photonic-Band-Gap Traveling-Wave Gyrotron Amplifier Nanni, Emilio Alessandro Lewis, Samantha M. Griffin, Robert Guy Shapiro, B. Temkin, Richard J Massachusetts Institute of Technology. Department of Chemistry Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Plasma Science and Fusion Center MIT Nuclear Reactor Laboratory Francis Bitter Magnet Laboratory (Massachusetts Institute of Technology) Nanni, Emilio Alessandro Lewis, Samantha M. Shapiro, Michael Griffin, Robert Guy Temkin, Richard J. We report the experimental demonstration of a gyrotron traveling-wave-tube amplifier at 250 GHz that uses a photonic band gap (PBG) interaction circuit. The gyrotron amplifier achieved a peak small signal gain of 38 dB and 45 W output power at 247.7 GHz with an instantaneous −3 dB bandwidth of 0.4 GHz. The amplifier can be tuned for operation from 245–256 GHz. The widest instantaneous −3 dB bandwidth of 4.5 GHz centered at 253.25 GHz was observed with a gain of 24 dB. The PBG circuit provides stability from oscillations by supporting the propagation of transverse electric (TE) modes in a narrow range of frequencies, allowing for the confinement of the operating TE[subscript 03]-like mode while rejecting the excitation of oscillations at nearby frequencies. This experiment achieved the highest frequency of operation for a gyrotron amplifier; at present, there are no other amplifiers in this frequency range that are capable of producing either high gain or high output power. This result represents the highest gain observed above 94 GHz and the highest output power achieved above 140 GHz by any conventional-voltage vacuum electron device based amplifier. National Institutes of Health (U.S.) (Grant EB001965) National Institute for Biomedical Imaging and Bioengineering (U.S.) (Grant EB004866) 2014-02-24T18:47:52Z 2014-02-24T18:47:52Z 2013-12 2013-05 Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/85081 Nanni, E., S. Lewis, M. Shapiro, R. Griffin, and R. Temkin. “Photonic-Band-Gap Traveling-Wave Gyrotron Amplifier.” Physical Review Letters 111, no. 23 (December 2013). © 2013 American Physical Society https://orcid.org/0000-0003-1589-832X https://orcid.org/0000-0001-9813-0177 en_US http://dx.doi.org/10.1103/PhysRevLett.111.235101 Physical Review Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society American Physical Society |
| spellingShingle | Nanni, Emilio Alessandro Lewis, Samantha M. Griffin, Robert Guy Shapiro, B. Temkin, Richard J Photonic-Band-Gap Traveling-Wave Gyrotron Amplifier |
| title | Photonic-Band-Gap Traveling-Wave Gyrotron Amplifier |
| title_full | Photonic-Band-Gap Traveling-Wave Gyrotron Amplifier |
| title_fullStr | Photonic-Band-Gap Traveling-Wave Gyrotron Amplifier |
| title_full_unstemmed | Photonic-Band-Gap Traveling-Wave Gyrotron Amplifier |
| title_short | Photonic-Band-Gap Traveling-Wave Gyrotron Amplifier |
| title_sort | photonic band gap traveling wave gyrotron amplifier |
| url | http://hdl.handle.net/1721.1/85081 https://orcid.org/0000-0003-1589-832X https://orcid.org/0000-0001-9813-0177 |
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